Re: Help! Very slow Disk I/O on G1610T Gen8 and ESXi

iMac is cheating (if it have HDD not SSD) Even 4 fastest HDD in RAID0 cannot create 8 GB of 8k blocks in 16 sec. 1 million I/O in 16 s = 62 kIOps, it is not real for HDD.Try /dev/urandom instead of /dev/zero. And check when really disk finished activity.

I also enabled physical write cache of disks on B120i (I have UPS).

There is also newer HP ESXi image from 30 March (hpsva driver should be reverted after upgrade)